During the tour stop at Dos Equis Pavilion on Saturday (Aug. 11), the singer brought out her gal pals to sing and share exciting news. "Since we're at our hometown show and both of them are married to Texans, we wanted to share some big news with you," Lambert says in the video above, captured mid-set by Kiss Country 93.7.

"See, one of us is drinking, one of us is smoking and one of us is not taking our pill!"

Lambert motions to Presley, who makes a growing baby bump very obvious as the crowd erupts in screams and applause. "Holler Annie's having a baby, everybody!" Lambert adds. "Stay tuned for hers. We don't know what it is, either."

This is Presley's second child, but her first with husband Jordan Powell, whom she married in 2012. She has a son named Jed from a previous relationship.

A baby isn't the only thing Presley is cooking up. The country-singing trio have been in the studio this year working on their third album. Presley reveals to the Bootthat she and her Annies partners have finished recording at least an album's worth of new material, saying: "We just finished our third record."

The new music doesn't have a release date yet, but "the record is there," Presley adds. In May, Lambert shared on social media that she was enjoying a pool day and writing session, which she followed with a photo of all three Annies on Twitter and Instagram in July. "Sangin' some songs," she wrote.

The album will follow the trio's previous releases, 2011's Hell on Heels and 2013's Annie Up. The Bandwagon Tour is Lambert's joint headlining tour with Little Big Town.